
.div_side {
    width: 200px;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 1001;
    overflow: hidden;
    box-shadow: 2px 0 6px rgba(0, 21, 41, .35);
 }
 
 .div_side_hidden {
    width: 57px;
 }
 
 .div_logo {
    position: relative;
    width: 100%;
    height: 50px;
    line-height: 50px;
    background-color: #293846;

 }
 
 .logo_src {
    width: 32px;
    height: 32px;
    vertical-align: middle;
    margin-left: 12px;
 }
 
 .logo_title {
    display: inline-block;
    line-height: 50px;
    font-size: 14px;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    color:#ff9900;
    vertical-align: middle;
 }
 
 .div_side_scroll {
    background-color: #293846;
 }
 
 .navbar_main {
    background-color: #4d607c;
 }